infidel (n.)
I do not know, sir, that the fellow is an infidel; but if he be an infidel, he is an infidel as a dog is an infidel; that is to say, he has never thought upon the subject.
A second Daniel, a Daniel, Jew!
Now, infidel, I have you on the hip.
He hath denied the faith, and is worse than an infidel.